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Like Parmeneides, thinking that the area near the equator was too hot for habitation, Aristotle dubbed the region around the equator (from 23.5° N to 23.5° S) the "Torrid Zone." Both philosophers reasoned the region from the Arctic Circle to the pole to be permanently frozen. This region thought uninhabitable, was called the "Frigid Zone."
The International Association of Geodesy (IAG) and the International Astronomical Union (IAU) use an equatorial radius of 6,378.1366 km (3,963.1903 mi) (codified as the IAU 2009 value). [6] This equatorial radius is also in the 2003 and 2010 IERS Conventions. [7] It is also the equatorial radius used for the IERS 2003 ellipsoid.
Many tropical areas have both a dry and a wet season. The wet season, rainy season or green season is the time of year, ranging from one or more months when most of the average annual rainfall in a region falls. [9] Areas with wet seasons are disseminated across portions of the tropics and subtropics, some even in temperate regions. [10]
Poor class neighborhoods in Guayaquil. ... Region 5 (38,420 km 2, or 14,834 mi 2): ... Equatorial Pacific Spanish or Equatorial Coastal Spanish;
Astronomical latitude (Φ) is the angle between the equatorial plane and the true vertical direction at a point on the surface. The true vertical, the direction of a plumb line, is also the gravity direction (the resultant of the gravitational acceleration (mass-based) and the centrifugal acceleration) at that latitude. [5]
The ITCZ is commonly defined as an equatorial zone where the trade winds converge. Rainfall seasonality is traditionally attributed to the north–south migration of the ITCZ, which follows the sun. Although this is largely valid over the equatorial oceans, the ITCZ and the region of maximum rainfall can be decoupled over the continents.
When it is dominated most of the year by the doldrums low-pressure system due to the presence of the Intertropical Convergence Zone (ITCZ) and when there are no cyclones then the climate is qualified as equatorial. When the trade winds dominate most of the year, the climate is a tropical trade-wind rainforest climate.
Global map showing location of the Equator. Equatorial Africa is an ambiguous term that sometimes is used to refer either to the equatorial region of sub-Saharan Africa traversed by the Equator, [1] more broadly to tropical Africa or in a biological and geo-environmental sense to the intra-tropical African rainforest region.